Papers - TAKENAKA, Koshi

Zn-substitution effect on the optical properties of PrBa(2)Cu(4)O(8) Reviewed

K. Takenaka, A. Osuka, S. Sugai, K. Nakada, S. Horii, H. Ikuta, and U. Mizutani

Physica C   Vol. 383 ( 3 ) page： 227-231   2002

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Al-Substitution Effect on Resistivity in Paramagnetic Phase of La(1-x)Sr(x)CoO(3): Comparison with Magnetoresistive La(1-x)Sr(x)MnO(3) Reviewed

Y. Sawaki, K. Takenaka, and S. Sugai

Journal of the Physical Society of Japan   Vol. 70 ( 2 ) page： 602-603   2001

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Anisotropic optical spectra of BaCo(1-x)Ni(x)S(2): Effect of Ni substitution on the electronic structure of the Co(1-x)Ni(x)S plane Reviewed

K. Takenaka, S. Kashima, A. Osuka, S. Sugai, Y. Yasui, S. Shamoto, and S. Sato

Physical Review B   Vol. 63 ( 11 ) page： 115113   2001

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Effect of oxygen annealing on the electrical properties of La(1-x)Sr(x)MnO(3+d) single crystals around the compositional metal-insulator transition Reviewed

R. Shiozaki, K. Takenaka, Y. Sawaki, and S. Sugai

Physical Review B   Vol. 63 ( 18 ) page： 184419   2001

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Optical Reflectivity Study on Al-Substituted La(0.825)Sr(0.175)MnO(3): Unconventional Localization State Induced by Vacancies in the Ferromagnetic Kondo Lattice Reviewed

K. Takenaka, Y. Sawaki, and S. Sugai

Journal of the Physical Society of Japan   Vol. 70 ( 7 ) page： 1896-1899   2001

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Electronic structure of the double-exchange ferromagnet La(0.825)Sr(0.175)MnO(3) studied by optical reflectivity Reviewed

K. Takenaka, Y. Sawaki, R. Shiozaki, and S. Sugai

Physical Review B   Vol. 62 ( 21 ) page： 13864-13867   2000

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Al-substitution effect on charge transport inLa(1-x)Sr(x)MnO(3): Incoherent metallic state in double-exchange ferromagnet Reviewed

Y. Sawaki, K. Takenaka, A. Osuka, R. Shiozaki, and S. Sugai

Physical Review B   Vol. 61 ( 17 ) page： 11588-11593   2000

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Anisotropic Optical Spectra of PrBa(2)Cu(4)O(8): Possible Tomonaga-Luttinger Liquid Response of the Quasi-One-Dimensional Metallic CuO Double Chains Reviewed

K. Takenaka, N. Nakada, A. Osuka, S. Horii, H. Ikuta, I. Hirabayashi, S. Sugai, and U. Mizutani

Physical Review Letters   Vol. 85 ( 25 ) page： 5428-5431   2000

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Incoherent-to-coherent crossover of optical spectra inLa(0.825)Sr(0.175)MnO(3): Temperature-dependent reflectivityspectra measured on cleaved surfaces Reviewed

K. Takenaka, Y. Sawaki, and S. Sugai

Physical Review B   Vol. 60 ( 18 ) page： 13011-13015   1999

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Optical Reflectivity Spectra Measured on Cleaved Surfaces of La(1-x)Sr(x)MnO(3): Evidence Against Extremely Small Drude Weight Reviewed

K. Takenaka, K. Iida, Y. Sawaki, S. Sugai, Y. Moritomo, and A. Nakamura

Journal of the Physical Society of Japan   Vol. 68 ( 6 ) page： 1828-1831   1999

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In-plane thermal conductivity and Lorenz number inYBa(2)Cu(3)O(7-y) Reviewed

K. Takenaka, Y. Fukuzumi, K. Mizuhashi, S. Uchida, H. Asaoka, and H. Takei

Physical Review B   Vol. 56 ( 9 ) page： 5654-5661   1997

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Universal Superconductor-Insulator Transition and Tc Depression in High-Tc Cuprates in the Uderdoped Regime Reviewed

Y. Fukuzumi, K. Mizuhashi. K. Takenaka, and S. Uchida

Physical Review Letters   Vol. 76 ( 4 ) page： 684-687   1996

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Effect on Zn-doping on charge transport in YBa(2)Cu(3)O(7-y) Reviewed

K. Mizuhashi, K. Takenaka, Y. Fukuzumi, and S. Uchida

Physical Review B   Vol. 52 ( 6 ) page： R3884-3887   1995

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Interplane charge transport in YBa(2)Cu(3)O(7-y):Spin-gap effect on in-plane and out-of-plane resistivity Reviewed

K. Takenaka, K. Mizuhashi, H. Takagi, and S. Uchida

Physical Review B   Vol. 50 ( 9 ) page： 6534-6537   1994

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Systematic Deviation from T-linear Behavior in the In-PlaneResistivity of YBa(2)Cu(3)O(7-y): Evidence for DominantSpin Scattering Reviewed

T. Ito, K. Takenaka, and S. Uchida

Physical Review Letters   Vol. 70 ( 25 ) page： 3995-3998   1993

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Electron-density Fourier maps of an untwinned YBa(2)Cu(3)O(6.877) single crystal by x-ray-diffraction data Reviewed

J. D. Sullivan, P. Bordet, M. Marezio, K. Takenaka, and S. Uchida

Physical Review B   Vol. 48 ( 14 ) page： 10638-10641   1993

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Anisotropic optical spectrum of untwinned PrBa(2)Cu(3)O(7):Persistence of the charge-transfer insulating state ofthe CuO(2) plane against hole doping Reviewed

K. Takenaka, Y. Imanaka, K. Tamasaku, T. Ito, and S. Uchida

Physical Review B   Vol. 46 ( 9 ) page： 5833-5836   1992

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